Key Features
- SIRIUS soft starter: Product designation: Soft starter.
- Integrated bypass contact system: Integrated bypass contact system: Yes.
- Adjustable current limitation: Adjustable current limitation: Yes.
- Inside-delta circuit: Inside-delta circuit: Yes.
- Control supply: Control supply voltage 1 at AC: 230 V at 50 Hz and 230 V at 60 Hz.
- Lifecycle note: Start of final year of support; phased-out product.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Product lifecycle | Start of final year of support |
| Integrated bypass contact system | Yes |
| Adjustable current limitation | Yes |
| Inside-delta circuit | Yes |
| Operational current at 40 °C rated value | 356 A |
| At 400 V – at standard circuit at 40 °C rated value | 200 kW |
| Operating voltage at standard circuit rated value | 200 … 460 V |
| Control supply voltage 1 at AC at 50 Hz rated value | 230 V |
Applications
- Inside-delta motor starting: Inside-delta circuit for 3-phase motors.
- Motor protection control: Motor overload protection, thermistor motor protection evaluation, and intrinsic device protection for a motor starter setup.
Frequently Asked Questions
What is the Siemens 3RW4446-6BC44?
It is a SIRIUS soft starter.
What are the main current and power ratings of 3RW4446-6BC44?
At 40 °C, the standard circuit rating is 356 A and 200 kW at 400 V. In inside-delta circuit, it is 617 A and 355 kW at 400 V.
What control supply voltage does 3RW4446-6BC44 use?
The control supply is AC 230 V at 50 Hz and 230 V at 60 Hz.
How is 3RW4446-6BC44 connected and mounted?
The main current circuit uses busbar connection, the auxiliary and control circuit uses screw-type terminals, and the device is fastened by screw fixing with a vertical mounting surface.
